So for example, does that mean Ragna's Blood Kain is no longer the input command it was in CT and CS, but has instead been moved to this Overdrive function? Sounds kind of like BlazBlue's take on X-Factor mode from MvC3.

And lol, simplifying the guard function to a simple guard break move. Dunno if that was called for or not, but it at least sounds easier to get a grasp of.